Aubrey de Grey. HARE Conference / flickr Futurists are keen on a concept called "radical life extension."

Rather than settling for a standard life expectancy — like 78.8 years on average for an American— theorists, scientists, and investors want to find therapies to treat the age-related diseases that tend to kill us (like heart disease and cancer).

"Ultimately, this is what people are going to vote for," he says. "If it's not available to everybody, then a party that has a manifest commitment to making it for everybody is going to get elected."

Then there are the economics of aging.

"At the moment, when people get sick, it's incredibly expensive," de Gray says. "Probably 90% of the medical budget of the industrialized world goes to the diseases and disabilities of old age one way or another. That's trillions and trillions of dollars. If we can stop people from going that way by only spending billions of dollars, it's a big net win."

"Therapies will pay for themselves in no time at all," de Gray says, "and that means from a government's point of view, even the government of a really tax-averse country like the USA, it would be economically suicidal not to frontload the investment to ensure that everyone got these therapies as soon as possible."

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